Musa of Pretender Shi'a Caliphate

Musa of Pretender Shi'a Caliphate (13 January 785-) was a boy who claimed to be Ali's rightful heir and Imam.

Biography
The schism at the heart of Islam dated back to its earliest days. The majority Sunnis had long persecuted the followers of Ali, the Shi'ites, forcing them into hiding. The partisans of Ali looked to his descendants for leadership, but they were forced to keep their ancestry secret. On 12 February 788, though, the Shias mobilized their strength behind a boy whom they claimed to be Ali's rightful heir and imam. Other Islamic jurists claimed that he was clearly a fraud, but to his followers he was the person they were waiting for and they flocked to his banner.

He was in hiding during the opening phases of his rebellion, with Youkhanna serving as his regent.